ABSTRACT Overinstrumentation during root canal treatment is one of the causes for iatrogenic enlargement of the root apex. It also leads to unwarranted coronal third widening, which results in thinning of the dentinal walls and makes the tooth susceptible to fracture. Another difficulty arises during control of obturation material within the canal. Such cases can be managed with obturation using mineral trioxide aggregate (MTA) followed by of root reinforcement for the weakened dentinal walls. In the present case, a 5 mm MTA plug was placed and root reinforcement was done with the help of Giomer. Postendodontic restoration was done with a cast post and a full coverage porcelain fused to a metal crown was cemented in place.Keywords: Apexification, Giomer, Mineral trioxide aggregate, Overinstrumentation, Root reinforcement.How to cite this article: Agrawal AM, Shenoy VU, Sumanthini MV, Bolli RV. Management of a Flared Root Canal with an Iatrogenically Widened Apex. J Contemp Dent 2016;6(3):200-207.Source of support: NilConflict of interest: None